Concealed stem flange gate valve
Space saving
strong concealment
corrosion resistance
Fujian Haijing Fire Fighting Equipment Co., Ltd. is one of the leading manufacturers and suppliers of concealed stem flange gate valve in China, also supports customized service. Please feel free to wholesale cheap concealed stem flange gate valve from our factory.
Products Description
Hidden stem flange (also known as hidden stem gate valve flange) is a special structure of valve flange, whose valve stem does not rise or fall with the gate plate, but drives the gate plate to move through internal thread rotation. This design is suitable for scenarios with limited space or requiring concealed installation, such as underground pipe galleries, internal equipment pipelines, etc.
Product advantages of NRS VALVE
1. Save installation space
The valve stem does not extend outward: no additional height space is required, suitable for low or closed environments (such as pipe wells, underground fire pump rooms).
Compact design: the overall height is 30% to 50% lower than that of the rising stem gate valve.
2. High concealment
No exposed moving parts: the valve stem is hidden in the valve cover to avoid collision damage and more beautiful appearance.
3. Strong corrosion resistance
Fully enclosed valve stem: Reduce contact with the outside world and reduce the risk of corrosion (especially suitable for humid and chemical environments).
4. Stable operation
Threaded transmission: The gate moves smoothly and is not easy to clog.
Typical application scenarios
1.Underground fire protection pipeline network: such as subway and tunnel fire hydrant systems.
2.Industrial pipelines: concealed pipelines in chemical plants and sewage treatment plants.
3.Internal pipelines of buildings: fire/water supply pipelines in suspended ceilings and equipment rooms.
|
Size |
Rated Working Pressure |
Sealing Test Pressure |
Strength Test Pressure |
OD of Flange(mm) |
|
DN50 |
1.6MPa |
3.2MPa |
6.4MPa |
165 |
|
185 |
||||
|
DN65 |
||||
|
200 |
||||
|
DN80 |
||||
|
220 |
||||
|
DN100 |
||||
|
DN125 |
250 |
|||
|
DN150 |
285 |
|||
|
DN200 |
340 |
|||
|
DN250 |
405 |
Company Information
Established in 1992, "SANJING" FIRE FIGHTING EQUIPMENT, is a professional manufacturer of various fire-fighting products of different specifications integrating research & development, manufacture, sales and service.
"SANJING" produces valves, fire sprinklers, fire hose reels, fire hoses, fire hydrants, fire department connections, cabinet, foam system products, gas system products, etc.
SANJING is a leading manufacturer and distributor of firefighting equipment in Nan'an City, Fujian PRC, China.
Q&a
Q1: Can concealed flange be used for fire pump outlet?
A1: Yes, but with conditions: Hard sealing material needs to be selected. Not recommended for high-frequency opening and closing scenarios. It is recommended to use a rising stem valve for easy observation of the status.
Q2: Why are concealed flanges suitable for underground pipe galleries?
A2: Space saving: No need for additional height, suitable for low rise environments in pipe galleries. Anti collision protection: The valve stem is not exposed to avoid being damaged by equipment or personnel collision. Moisture resistance: The enclosed structure reduces the risk of valve stem corrosion.
Contact information
Pauline
WhatsApp/WeChat: +86-13332933886
Email: manager@sanjingfire.com
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